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Subject[PATCH] drm/sun4i: Implement zpos for DE2
Date
Initial implementation of DE2 planes only supported fixed zpos.

Expand implementation with configurable zpos property.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
---
drivers/gpu/drm/sun4i/sun8i_mixer.c | 15 +++++++--
drivers/gpu/drm/sun4i/sun8i_mixer.h | 4 +++
drivers/gpu/drm/sun4i/sun8i_ui_layer.c | 45 ++++++++++++++++----------
drivers/gpu/drm/sun4i/sun8i_vi_layer.c | 45 ++++++++++++++++----------
4 files changed, 72 insertions(+), 37 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c
index ee8febb25903..0747a9a69654 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
@@ -260,6 +260,17 @@ const struct de2_fmt_info *sun8i_mixer_format_info(u32 format)
return NULL;
}

+static void sun8i_mixer_atomic_begin(struct sunxi_engine *engine,
+ struct drm_crtc_state *old_state)
+{
+ /*
+ * Disable all pipes at the beginning. They will be enabled
+ * again if needed in plane update callback.
+ */
+ regmap_update_bits(engine->regs, SUN8I_MIXER_BLEND_PIPE_CTL,
+ SUN8I_MIXER_BLEND_PIPE_CTL_EN_MSK, 0);
+}
+
static void sun8i_mixer_commit(struct sunxi_engine *engine)
{
DRM_DEBUG_DRIVER("Committing changes\n");
@@ -311,6 +322,7 @@ static struct drm_plane **sun8i_layers_init(struct drm_device *drm,
}

static const struct sunxi_engine_ops sun8i_engine_ops = {
+ .atomic_begin = sun8i_mixer_atomic_begin,
.commit = sun8i_mixer_commit,
.layers_init = sun8i_layers_init,
};
@@ -432,9 +444,6 @@ static int sun8i_mixer_bind(struct device *dev, struct device *master,
regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_ATTR_FCOLOR(0),
SUN8I_MIXER_BLEND_COLOR_BLACK);

- /* Fixed zpos for now */
- regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_ROUTE, 0x43210);
-
plane_cnt = mixer->cfg->vi_num + mixer->cfg->ui_num;
for (i = 0; i < plane_cnt; i++)
regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_MODE(i),
diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.h b/drivers/gpu/drm/sun4i/sun8i_mixer.h
index f34e70c42adf..406c42e752d7 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.h
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.h
@@ -44,6 +44,7 @@
#define SUN8I_MIXER_BLEND_CK_MIN(x) (0x10e0 + 0x04 * (x))
#define SUN8I_MIXER_BLEND_OUTCTL 0x10fc

+#define SUN8I_MIXER_BLEND_PIPE_CTL_EN_MSK GENMASK(12, 8)
#define SUN8I_MIXER_BLEND_PIPE_CTL_EN(pipe) BIT(8 + pipe)
#define SUN8I_MIXER_BLEND_PIPE_CTL_FC_EN(pipe) BIT(pipe)
/* colors are always in AARRGGBB format */
@@ -51,6 +52,9 @@
/* The following numbers are some still unknown magic numbers */
#define SUN8I_MIXER_BLEND_MODE_DEF 0x03010301

+#define SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(n) (0xf << ((n) << 2))
+#define SUN8I_MIXER_BLEND_ROUTE_PIPE_SHIFT(n) ((n) << 2)
+
#define SUN8I_MIXER_BLEND_OUTCTL_INTERLACED BIT(1)

#define SUN8I_MIXER_FBFMT_ARGB8888 0
diff --git a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
index 9a540330cb79..518e1921f47e 100644
--- a/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_ui_layer.c
@@ -27,7 +27,7 @@
#include "sun8i_ui_scaler.h"

static void sun8i_ui_layer_enable(struct sun8i_mixer *mixer, int channel,
- int overlay, bool enable)
+ int overlay, bool enable, unsigned int zpos)
{
u32 val;

@@ -43,18 +43,24 @@ static void sun8i_ui_layer_enable(struct sun8i_mixer *mixer, int channel,
SUN8I_MIXER_CHAN_UI_LAYER_ATTR(channel, overlay),
SUN8I_MIXER_CHAN_UI_LAYER_ATTR_EN, val);

- if (enable)
- val = SUN8I_MIXER_BLEND_PIPE_CTL_EN(channel);
- else
- val = 0;
+ if (enable) {
+ val = SUN8I_MIXER_BLEND_PIPE_CTL_EN(zpos);

- regmap_update_bits(mixer->engine.regs,
- SUN8I_MIXER_BLEND_PIPE_CTL,
- SUN8I_MIXER_BLEND_PIPE_CTL_EN(channel), val);
+ regmap_update_bits(mixer->engine.regs,
+ SUN8I_MIXER_BLEND_PIPE_CTL, val, val);
+
+ val = channel << SUN8I_MIXER_BLEND_ROUTE_PIPE_SHIFT(zpos);
+
+ regmap_update_bits(mixer->engine.regs,
+ SUN8I_MIXER_BLEND_ROUTE,
+ SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(zpos),
+ val);
+ }
}

static int sun8i_ui_layer_update_coord(struct sun8i_mixer *mixer, int channel,
- int overlay, struct drm_plane *plane)
+ int overlay, struct drm_plane *plane,
+ unsigned int zpos)
{
struct drm_plane_state *state = plane->state;
u32 src_w, src_h, dst_w, dst_h;
@@ -137,10 +143,10 @@ static int sun8i_ui_layer_update_coord(struct sun8i_mixer *mixer, int channel,
state->dst.x1, state->dst.y1);
DRM_DEBUG_DRIVER("Layer destination size W: %d H: %d\n", dst_w, dst_h);
regmap_write(mixer->engine.regs,
- SUN8I_MIXER_BLEND_ATTR_COORD(channel),
+ SUN8I_MIXER_BLEND_ATTR_COORD(zpos),
SUN8I_MIXER_COORD(state->dst.x1, state->dst.y1));
regmap_write(mixer->engine.regs,
- SUN8I_MIXER_BLEND_ATTR_INSIZE(channel),
+ SUN8I_MIXER_BLEND_ATTR_INSIZE(zpos),
outsize);

return 0;
@@ -238,28 +244,30 @@ static void sun8i_ui_layer_atomic_disable(struct drm_plane *plane,
struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane);
struct sun8i_mixer *mixer = layer->mixer;

- sun8i_ui_layer_enable(mixer, layer->channel, layer->overlay, false);
+ sun8i_ui_layer_enable(mixer, layer->channel, layer->overlay, false, 0);
}

static void sun8i_ui_layer_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct sun8i_ui_layer *layer = plane_to_sun8i_ui_layer(plane);
+ unsigned int zpos = plane->state->normalized_zpos;
struct sun8i_mixer *mixer = layer->mixer;

if (!plane->state->visible) {
sun8i_ui_layer_enable(mixer, layer->channel,
- layer->overlay, false);
+ layer->overlay, false, 0);
return;
}

sun8i_ui_layer_update_coord(mixer, layer->channel,
- layer->overlay, plane);
+ layer->overlay, plane, zpos);
sun8i_ui_layer_update_formats(mixer, layer->channel,
layer->overlay, plane);
sun8i_ui_layer_update_buffer(mixer, layer->channel,
layer->overlay, plane);
- sun8i_ui_layer_enable(mixer, layer->channel, layer->overlay, true);
+ sun8i_ui_layer_enable(mixer, layer->channel, layer->overlay,
+ true, zpos);
}

static struct drm_plane_helper_funcs sun8i_ui_layer_helper_funcs = {
@@ -307,6 +315,7 @@ struct sun8i_ui_layer *sun8i_ui_layer_init_one(struct drm_device *drm,
enum drm_plane_type type = DRM_PLANE_TYPE_OVERLAY;
int channel = mixer->cfg->vi_num + index;
struct sun8i_ui_layer *layer;
+ unsigned int plane_cnt;
int ret;

layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
@@ -327,8 +336,10 @@ struct sun8i_ui_layer *sun8i_ui_layer_init_one(struct drm_device *drm,
return ERR_PTR(ret);
}

- /* fixed zpos for now */
- ret = drm_plane_create_zpos_immutable_property(&layer->plane, channel);
+ plane_cnt = mixer->cfg->ui_num + mixer->cfg->vi_num;
+
+ ret = drm_plane_create_zpos_property(&layer->plane, channel,
+ 0, plane_cnt - 1);
if (ret) {
dev_err(drm->dev, "Couldn't add zpos property\n");
return ERR_PTR(ret);
diff --git a/drivers/gpu/drm/sun4i/sun8i_vi_layer.c b/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
index 5877f8ef5895..17e0d00cfd8a 100644
--- a/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
@@ -21,7 +21,7 @@
#include "sun8i_vi_scaler.h"

static void sun8i_vi_layer_enable(struct sun8i_mixer *mixer, int channel,
- int overlay, bool enable)
+ int overlay, bool enable, unsigned int zpos)
{
u32 val;

@@ -37,18 +37,24 @@ static void sun8i_vi_layer_enable(struct sun8i_mixer *mixer, int channel,
SUN8I_MIXER_CHAN_VI_LAYER_ATTR(channel, overlay),
SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN, val);

- if (enable)
- val = SUN8I_MIXER_BLEND_PIPE_CTL_EN(channel);
- else
- val = 0;
+ if (enable) {
+ val = SUN8I_MIXER_BLEND_PIPE_CTL_EN(zpos);

- regmap_update_bits(mixer->engine.regs,
- SUN8I_MIXER_BLEND_PIPE_CTL,
- SUN8I_MIXER_BLEND_PIPE_CTL_EN(channel), val);
+ regmap_update_bits(mixer->engine.regs,
+ SUN8I_MIXER_BLEND_PIPE_CTL, val, val);
+
+ val = channel << SUN8I_MIXER_BLEND_ROUTE_PIPE_SHIFT(zpos);
+
+ regmap_update_bits(mixer->engine.regs,
+ SUN8I_MIXER_BLEND_ROUTE,
+ SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(zpos),
+ val);
+ }
}

static int sun8i_vi_layer_update_coord(struct sun8i_mixer *mixer, int channel,
- int overlay, struct drm_plane *plane)
+ int overlay, struct drm_plane *plane,
+ unsigned int zpos)
{
struct drm_plane_state *state = plane->state;
const struct drm_format_info *format = state->fb->format;
@@ -130,10 +136,10 @@ static int sun8i_vi_layer_update_coord(struct sun8i_mixer *mixer, int channel,
state->dst.x1, state->dst.y1);
DRM_DEBUG_DRIVER("Layer destination size W: %d H: %d\n", dst_w, dst_h);
regmap_write(mixer->engine.regs,
- SUN8I_MIXER_BLEND_ATTR_COORD(channel),
+ SUN8I_MIXER_BLEND_ATTR_COORD(zpos),
SUN8I_MIXER_COORD(state->dst.x1, state->dst.y1));
regmap_write(mixer->engine.regs,
- SUN8I_MIXER_BLEND_ATTR_INSIZE(channel),
+ SUN8I_MIXER_BLEND_ATTR_INSIZE(zpos),
outsize);

return 0;
@@ -266,28 +272,30 @@ static void sun8i_vi_layer_atomic_disable(struct drm_plane *plane,
struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
struct sun8i_mixer *mixer = layer->mixer;

- sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay, false);
+ sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay, false, 0);
}

static void sun8i_vi_layer_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
+ unsigned int zpos = plane->state->normalized_zpos;
struct sun8i_mixer *mixer = layer->mixer;

if (!plane->state->visible) {
sun8i_vi_layer_enable(mixer, layer->channel,
- layer->overlay, false);
+ layer->overlay, false, 0);
return;
}

sun8i_vi_layer_update_coord(mixer, layer->channel,
- layer->overlay, plane);
+ layer->overlay, plane, zpos);
sun8i_vi_layer_update_formats(mixer, layer->channel,
layer->overlay, plane);
sun8i_vi_layer_update_buffer(mixer, layer->channel,
layer->overlay, plane);
- sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay, true);
+ sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay,
+ true, zpos);
}

static struct drm_plane_helper_funcs sun8i_vi_layer_helper_funcs = {
@@ -351,6 +359,7 @@ struct sun8i_vi_layer *sun8i_vi_layer_init_one(struct drm_device *drm,
int index)
{
struct sun8i_vi_layer *layer;
+ unsigned int plane_cnt;
int ret;

layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
@@ -368,8 +377,10 @@ struct sun8i_vi_layer *sun8i_vi_layer_init_one(struct drm_device *drm,
return ERR_PTR(ret);
}

- /* fixed zpos for now */
- ret = drm_plane_create_zpos_immutable_property(&layer->plane, index);
+ plane_cnt = mixer->cfg->ui_num + mixer->cfg->vi_num;
+
+ ret = drm_plane_create_zpos_property(&layer->plane, index,
+ 0, plane_cnt - 1);
if (ret) {
dev_err(drm->dev, "Couldn't add zpos property\n");
return ERR_PTR(ret);
--
2.18.0
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